A high-efficiency condensation tank for NMP production

Abstract

The utility model discloses a high-efficiency condensing tank for NMP production, including a tank body, a spiral cooling water pipe is arranged inside the tank body, a spiral condensing pipe is sleeved outside the spiral cooling water pipe, the top of the spiral cooling water pipe penetrates the top of the tank body and is provided with a water outlet, the bottom of the spiral cooling water pipe penetrates the bottom of the tank body and is provided with a water inlet, the top of the spiral condensing pipe penetrates the top of the tank body and is provided with an air inlet pipe, and the bottom of the spiral condensing pipe penetrates the bottom of the tank body and is provided with a condensing water outlet. NMP waste gas is input into the spiral condensing pipe through the air inlet pipe, and is rotated and transported downward through the spiral condensing pipe, and the water inlet of the spiral cooling water pipe is connected to cooling water, so that cooling water is input into the spiral cooling water pipe, and is rotated and transported upward through the spiral cooling water pipe, the NMP waste gas contacts the cooling water, performs heat exchange, and condenses the NMP waste gas, and the spiral condensing pipe is provided to rotate and descend the NMP waste gas, increase the disturbance of the NMP waste gas, and then fully cool it.

Description

Technical Field

[0001] The utility model belongs to the technical field of condensing tanks, and in particular relates to a high-efficiency condensing tank used for NMP production. Background Art

[0002] A large amount of NMP (N-methylpyrrolidone) waste gas is generated during the mixing, pulping and coating process in the plate engineering. NMP is widely used in industries such as lithium batteries, high-end coatings and electronic insulation. The concentration of this part of waste gas is relatively high, the air volume is large, and the solvent component is single, so the recycling and reuse value is high. The existing NMP waste gas treatment generally adopts condensation treatment. The condensed and liquefied components are recovered in storage tanks, and the uncondensed waste gas is connected to an adsorption tower equipped with nano-adsorbents for adsorption enrichment. After adsorption, the waste gas can meet the emission standards.

[0003] In the prior art, heat exchange tubes are used to cool and condense NMP waste gas, but the heat exchange tubes are wrapped around the outside of the guide tube, and the waste gas passes through the inside of the guide tube. During condensation, only the waste gas in contact with the inner wall of the guide tube condenses faster, while the waste gas in the middle of the guide tube cannot be condensed due to its high temperature, resulting in incomplete condensation of the NMP waste gas and poor condensation effect. Utility Model Content

[0004] In view of the problem that during condensation, only the exhaust gas in contact with the inner wall of the guide tube condenses quickly, while the exhaust gas in the middle of the guide tube cannot be condensed due to its high temperature, resulting in incomplete condensation of the NMP exhaust gas and poor condensation effect. The utility model provides a high-efficiency condensation tank for NMP production.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-efficiency condensing tank for NMP production, comprising a tank body, a spiral cooling water pipe is arranged inside the tank body, a spiral condensing pipe is sleeved outside the spiral cooling water pipe, the top end of the spiral cooling water pipe passes through the top of the tank body and is provided with a water outlet, the bottom end of the spiral cooling water pipe passes through the bottom of the tank body and is provided with a water inlet, the top end of the spiral condensing pipe passes through the top of the tank body and is provided with an air inlet pipe, the bottom end of the spiral condensing pipe passes through the bottom of the tank body and is provided with a condensation water outlet, and cooling water is stored inside the tank body.

[0006] Preferably, a water supply pipe and a drainage pipe are fixedly provided on the outer wall of the tank body, and end caps are provided at the ends of the water supply pipe and the drainage pipe.

[0007] Preferably, an L-shaped bracket is fixedly provided at the bottom of the tank body, a collecting cylinder is provided on the L-shaped bracket, and the collecting cylinder is located below the condensation water outlet.

[0008] Preferably, a sealing plate is provided at the top end of the spiral condenser, the top end of the spiral cooling water pipe passes through the sealing plate, and the air inlet pipe is connected to the spiral condenser.

[0009] Preferably, a motor is fixedly provided on the top of the tank body, a rotating shaft is fixedly provided on the output end of the motor, and a stirring blade is fixedly provided on the bottom end of the rotating shaft passing through the top wall of the tank body.

[0010] Preferably, a spiral condenser tube extends from the top end of the spiral cooling water pipe, and a spiral condenser tube extends from the bottom end of the spiral cooling water pipe.

[0011] Preferably, four legs are provided at the bottom of the tank body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The NMP waste gas is input into the spiral condenser through the air inlet pipe, enters into the space between the spiral condenser and the spiral cooling water pipe, and is transported downward through the spiral condenser. At the same time, the water inlet of the spiral cooling water pipe is connected to cooling water, so that the cooling water is input into the spiral cooling water pipe and is transported upward through the spiral cooling water pipe. The NMP waste gas contacts the cooling water to exchange heat, and the NMP waste gas is condensed. The spiral condenser is set to rotate and descend the NMP waste gas, increase the disturbance of the NMP waste gas, and then fully cool it.

[0014] 2. The NMP waste gas in the spiral condenser tube is cooled externally by the cooling water inside the tank body. The motor drives the shaft to rotate, and the shaft drives the stirring blade to rotate, so that the cooling water flows and the cooling effect of the NMP waste gas is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of another perspective of the utility model as a whole;

[0017] Figure 3 It is a schematic structural diagram of the overall cross-section of the utility model;

[0018] Figure 4 For this utility model Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0019] In the figure: 1. tank body; 2. spiral cooling water pipe; 3. spiral condenser; 4. water outlet; 5. water inlet; 6. air inlet pipe; 7. condensation water outlet; 8. water supply pipe; 9. drain pipe; 10. end cover; 11. L-shaped bracket; 12. collecting tube; 13. sealing plate; 14. motor; 15. rotating shaft; 16. stirring blade; 17. support leg. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-4 A high-efficiency condensing tank for NMP production comprises a tank body 1, a spiral cooling water pipe 2 is arranged on the inner side of the tank body 1, a spiral condensing tube 3 is sleeved on the outer side of the spiral cooling water pipe 2, the top end of the spiral cooling water pipe 2 passes through the top of the tank body 1 and is provided with a water outlet 4, the bottom end of the spiral cooling water pipe 2 passes through the bottom of the tank body 1 and is provided with a water inlet 5, the top end of the spiral condensing tube 3 passes through the top of the tank body 1 and is provided with an air inlet pipe 6, the bottom end of the spiral condensing tube 3 passes through the bottom of the tank body 1 and is provided with a condensing water outlet 7, the spiral condensing tube 3 extends from the top end of the spiral cooling water pipe 2, and the spiral condensing tube 3 extends from the bottom end of the spiral cooling water pipe 2.

[0022] A sealing plate 13 is provided at the top of the spiral condenser tube 3 , the top of the spiral cooling water pipe 2 passes through the sealing plate 13 , and the air inlet pipe 6 is connected to the spiral condenser tube 3 .

[0023] Specifically, the waste gas produced by NMP is introduced through the air inlet pipe 6, and the NMP waste gas is input into the spiral condenser 3 through the air inlet pipe 6, enters the space between the spiral condenser 3 and the spiral cooling water pipe 2, and is rotated and transported downward through the spiral condenser 3. At the same time, the water inlet 5 of the spiral cooling water pipe 2 is connected to the cooling water, so that the cooling water is input into the spiral cooling water pipe 2, and is rotated and transported upward through the spiral cooling water pipe 2. The NMP waste gas contacts the cooling water to exchange heat, so that the NMP waste gas is condensed. By setting the spiral condenser 3, the NMP waste gas is rotated downward, the disturbance of the NMP waste gas is increased, and then it is fully cooled.

[0024] In addition, an L-shaped bracket 11 is fixedly provided at the bottom of the tank body 1, and a collecting tube 12 is provided on the L-shaped bracket 11. The collecting tube 12 is located below the condensation water outlet 7. The condensation water flows into the collecting tube 12 through the condensation water outlet 7 to be collected and stored.

[0025] Furthermore, cooling water is stored inside the tank body 1 , and a water supply pipe 8 and a drainage pipe 9 are fixedly provided on the outer wall of the tank body 1 , and end covers 10 are provided at the ends of the water supply pipe 8 and the drainage pipe 9 .

[0026] In addition, a motor 14 is fixedly provided on the top of the tank body 1 , a rotating shaft 15 is fixedly provided on the output end of the motor 14 , and a stirring blade 16 is fixedly provided on the bottom end of the rotating shaft 15 which penetrates the top wall of the tank body 1 .

[0027] The NMP waste gas in the spiral condenser 3 is cooled externally by the cooling water inside the tank body 1, and the rotating shaft 15 is driven to rotate by the motor 14, and the rotating shaft 15 drives the stirring blade 16 to rotate, so that the cooling water flows, thereby improving the cooling effect of the NMP waste gas.

[0028] Finally, four legs 17 are provided at the bottom of the tank body 1 .

[0029] The operating principle of the utility model is described as follows: the waste gas produced by NMP is introduced through the air inlet pipe 6, the NMP waste gas is input into the spiral condenser 3 through the air inlet pipe 6, enters the space between the spiral condenser 3 and the spiral cooling water pipe 2, and is rotated downward through the spiral condenser 3. At the same time, the water inlet 5 of the spiral cooling water pipe 2 is connected to the cooling water, so that the cooling water is input into the spiral cooling water pipe 2, and is rotated upward through the spiral cooling water pipe 2. The NMP waste gas contacts the cooling water and performs heat exchange, so that the NMP waste gas is condensed. By setting the spiral condenser 3, the NMP waste gas is rotated downward, the disturbance of the NMP waste gas is increased, and then it is fully cooled. The NMP waste gas in the spiral condenser 3 is cooled externally by the cooling water inside the tank body 1, and the rotating shaft 15 is driven by the motor 14 to rotate, and the rotating shaft 15 drives the stirring blade 16 to rotate, so that the cooling water flows, thereby improving the cooling effect of the NMP waste gas.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-efficiency condensation tank for NMP production, comprising a tank body (1), characterized in that: A spiral cooling water pipe (2) is arranged inside the tank body (1), and a spiral condenser (3) is sleeved outside the spiral cooling water pipe (2); the top end of the spiral cooling water pipe (2) passes through the top of the tank body (1) and is provided with a water outlet (4); the bottom end of the spiral cooling water pipe (2) passes through the bottom of the tank body (1) and is provided with a water inlet (5); the top end of the spiral condenser (3) passes through the top of the tank body (1) and is provided with an air inlet pipe (6); the bottom end of the spiral condenser (3) passes through the bottom of the tank body (1) and is provided with a condensation water outlet (7); and cooling water is stored inside the tank body (1).

2. A high-efficiency condensing tank for NMP production according to claim 1, characterized in that, A water supply pipe (8) and a drainage pipe (9) are fixedly arranged on the outer wall of the tank body (1), and end covers (10) are arranged at the ends of the water supply pipe (8) and the drainage pipe (9).

3. A high-efficiency condensing tank for NMP production according to claim 1, characterized in that, An L-shaped bracket (11) is fixedly arranged at the bottom of the tank body (1), a collecting tube (12) is arranged on the L-shaped bracket (11), and the collecting tube (12) is located below the condensation water outlet (7).

4. A high-efficiency condensing tank for NMP production according to claim 1, characterized in that, A sealing plate (13) is provided at the top end of the spiral condenser tube (3); the top end of the spiral cooling water pipe (2) passes through the sealing plate (13); and the air inlet pipe (6) is connected to the spiral condenser tube (3).

5. A high-efficiency condensing tank for NMP production according to claim 1, characterized in that, A motor (14) is fixedly arranged on the top of the tank body (1), a rotating shaft (15) is fixedly arranged on the output end of the motor (14), and a stirring blade (16) is fixedly arranged on the bottom end of the rotating shaft (15) that penetrates the top wall of the tank body (1).

6. A high-efficiency condensing tank for NMP production according to claim 1, characterized in that: A spiral condenser tube (3) extends from the top end of the spiral cooling water pipe (2), and a spiral condenser tube (3) extends from the bottom end of the spiral cooling water pipe (2).

7. A high-efficiency condensing tank for NMP production according to claim 1, characterized in that: Four supporting legs (17) are provided at the bottom of the tank body (1).

Images